Method of protecting surfaces.



Nbu.vl'722,836. PATENTED MAR. 17, 1903.

' W. HfGROWI METHOD 0F PROTECTING SURFACES.

APPLICATION FILED Alm-2. 1902.

No MODEL.

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UNITED STATES PATENT OFFICE.

WILLIAM H.`GROV, OF WINFIELD, KANSAS.

METHOD OF PROTECTING SURFACES.

SPECIFICATION forming part of Letters Patent No. 722,836, dated March17,

Application tiled August 2,1902, Serial No. 118,190. (No model.)

fo a/ZZ whom it may concern,.-

Be it known that I, WILLIAM H. GRoW,Ya citizen of the United States,residing at Winfield, in the county of Cowley and State of Kansas, haveinvented certain new and useful Improvements in Methods of ProtectingSurfaces, of which the following is a specification.

This invention relates to a novel method of other surface to be coveredor protected.v

Over this surface a layer or covering 2 is placedV and may consist ofsuch in aterial as felt or metal or may be an old roof properly repairedto make it whole. ing 2 is placed a layer of cement 3 or..other selfsetting and hardening substance, 'thecef ment being applied either in adry state or spread after being mixed with'water'to form a mortar.Burlap 4 or like textile is placed over the cement and pressure appliedto cause the cement to enter the meshes or .interstices between thethread or strands. The burlap is moistened with water in order to assistin the proper setting of the cement. jIt isvpreferred to apply thecement in a dry state, as.

` it can be more evenly and uniformly distributed and at a less expense.After the burlap or textile lthas been placed in position water insuicient quantity is applied to thoroughly saturate the cement, whichsubsequently hardens and sets, the wet of the burlap preventing a toorapid evaporation of the Water and insuring a proper setting of thecement, which is essential to the durability and efficiency of theprotection aorded the surface. After the cement has set a coating 5, ofcement, pitch, paint, or othersubstance, may be applied to the buriapVas a further protection, and when the coat 5 consists of cement theburlap or textile 4 will be embedded in a body of cement and serve as abond therefor.

Abeing pari Over this cover-- The outer coat 5 may be covered orfinished in any desired way, according to the cost of the protectivecovering applied to the surface. The layers l and 2 may be strips orblocks and may be arranged to break joint or with thejoints coinciding,this being immaterial within the purview'ofthe invention.

In case the surface to be protected is perpendicular, or nearly so, itwill be necessary to dampen the outer' surface of the layer 2 to 'causethe dry cement to adhere thereto, and the inner surface of the vburlapor textile 4 is likewise dampened and the cement applied thereto, afterwhich the burlap is applied and secured to the surface with theV cementside against the cement nside ofthe layer 2. Waterh is applied to theburlap in suiicient quanltity to thoroughlywet the cement and cause thelayers 2and 4 to unite, said layers being nailed or otherwise secured tothe surface in any convenient way.

.. Having thus described the invention, what 1. The herein-describedmethod of protecting surfaces, the same consisting in applying a layeror cover thereto, then applying a selfsetting substance tothe outer sideof said cover, then placing burlap or textile over the cement andfinally wetting the burlap or textile to reduce the cement to a plasticstate, whereby the two layers are bound together, the burlap or textilecontaining the moisture and insuring a proper setting of the cement 'orlike substance, substantially as described.

V2. The herein-described method of protecting surfaces, the sameconsisting of applying a layer or cover thereto, then spreading cementor a self-hardening substance over said cover, then placing burlap ortextile over the cement, then wetting the burlap or textile and applyingpressure thereto to embed the same into the softened or plastic cementand finally applying a coat to the outer side of the burlap, whichlatter constitutes abond between the outer coat and cement,substantially as set forth. 1

In testimony whereof I ax my signature in presence of twowitnesses.V

WILLIAM H. GROW. [L. s] Witnesses:

R. M. BARNETT, C. L. GARVER.

